166245210012 has 144 divisors (see below), whose sum is σ = 462568488480. Its totient is φ = 46320519168.

The previous prime is 166245210011. The next prime is 166245210029. The reversal of 166245210012 is 210012542661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166245210011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3798478 + ... + 3841994.

It is an arithmetic number, because the mean of its divisors is an integer number (3212281170).

Almost surely, 2^166245210012 is an apocalyptic number.

166245210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166245210012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231284244240).

166245210012 is an abundant number, since it is smaller than the sum of its proper divisors (296323278468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166245210012 is a wasteful number, since it uses less digits than its factorization.

166245210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43700 (or 43691 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 166245210012 its reverse (210012542661), we get a palindrome (376257752673).

The spelling of 166245210012 in words is "one hundred sixty-six billion, two hundred forty-five million, two hundred ten thousand, twelve".